I think it's important to remember that items that are best in slot when put together might not make the best set.
I'm not sure which you are going for here though Parium. Is this a list of BiS items or a best possible gear set?
If it's a set there will be a lot of contention between people when you get EH vs avoidance vs balance arguments, I think.
It does look like (to me), you have quite a few pieces with shield block rating, and comparing it to my current gear and what you listed in the previous post, some of it has to be wasted.. and wasted itemisation no matter how small is still a waste unless there is literally nothing that comes close with itemisation is different areas.
For example: Wouldn't
http://www.wowhead.com/?item=45251 be a better choice than the T8.5 shoulders? The difference is only small, but surely better than wasted SBR? The 2 piece bonus is nice to have, but considering the bosses in ulduar, and how hard some of the trash hits, block in its current form is very poor in my opinion.
Personally, I've gone down the avoidance route with my main set of gear, I have a variety of trinkets I can swap in and out depending on the situation, so this is where I tend to change things for different situations (excluding my block value set).